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@hitch ,its-trs JOHN MAC NAlR, 0F NEW ORLEANS, LOUISIANA. Letters Patentlll'o. 72,515, dated December 24, 1867,

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TO ALL WHOM I'l MAY CONCERN: l

Be it known that I, JOHN MAC NAIR, of New Orleans, in the vparish of Orleans, and State of Louisiana, have invented a new and'improved Machine for Making Moulds for stereotyping; and I do hereby declare that the following is a full, clear, and exact description thereof, which will enable others skilled in the art to make and use the same, reference being had to the accompanying drawings, and to the letters of reference marked thereon. Y

This invention relates` to a new andimproved device, whereby letter-types may be pressed directly into a plastic substance, and a Stereotype-mouldobtained direct, or without'the trouble of ,first setting up the type and then taking a. cas-t from them, as is now practised. In the accompanying shaetsiof drawings- Figure 1, Sheet No. 1, is a side sectional view of my invention, taken in theiline :v :v of hg. 2.

Figure 2, Sheet No. 2, a transverse vertical section cf the same, taken in the line y y, fig. 1. Y

Figure 3, a detached view of'an index-plate, pertaining to the same.

Figure 4 is a plan view of the disks, showing the types forming the'word or Sentence to be printed, justiied or spaced.

Similar letters of referenceiindicate like parts.

A represents a box or case, which contains thevworking parts of the device, and B represent-s a vseries of circular sheet-metal disks, which turn loosely upon a horizontal tubular shaft, C, inbox A, said shaft C being attached at its ends to vertical tubular shafts D D, which rest on vspiral springs, E, within them, and which= support the shaft C, as shown in fig. 2; the shafts D D being fitted and allowed to slide `freely on sockets F F, which serve as guides for said shafts,aud screwrods G Gr pass up through the shafts D, sockets F, and shaft C, and are connected at their lower ends to a lever-frame, H, at the under side of the box A. By depressing this lever-frame at any time, the disks B may be pressed or forced down, the object ot' whichwillbe presently shown. The disks B have washers I between them, and the disks lhave each two curved concentric slots or openings ainade through them, as shown clearly lin iig. 1, .and two alphabets of types, J, are-secured to each disk, and scoured thereto by soldering metal plates, b, to their sides. The` types are secured to the disks at the outer edges or sides ot' the slots or openings a, the types being at one side of the disks, and the plates b at the opposite side, (see tig. 2.) Each disk has also aconceutric pulley, o, attached to it, and around these pulleys cords d are wound, and extend through holes in one end of the box A. These cords have each a pin, e, attached to their ends, as shown clearly in tig. 1.

To the end of the box A, through which the cords d pass, there is attached, by a hinge or joint, f, a

plate, K, perforated with a series of holes, g, made in transverse-rows, each row having a letter of the alphal bet stamped at one end ofit. This plate K serves as an index, and enables the operator to turn the disks B so as to bring any desired type directly underneath the axis of its disk B; for instance, if it is desired to bring the type M underneath the axis of a disk, the cord @Z ot' said disk. is drawn through the hole in the end of the box, until the pin e of said cord may be inserted in a hole, g, of the row which has the letter M stamped at 'one cnd of it. i By this simple manipulation, any letter on any disk may be brought underneath the axis of the latter, and in order to prevent errors, a duplicate set of type is attached to each disk, so that when a type is brought underneath the axis of each disk, a corresponding type will be seen at the top of the same.

It will he seen, therefore, that by this arrangement a line composed of any words may be brought directlyv under the axis ofthe several disks, and by pressing down the'lcverhframe H, said types may be made to leavel an impression in a plastic substance, L, placed on' a carriage, M, at the bottom of the box or case A, the types thus impinging into the plastic substance, 'passing through a slotted plate, N, which extends over the carriage M.

The carriage M has a rack, h, at each side of it, and into these racks, pawls O O catch, said pawls being pivoted to uprights P, the lower ends of which are pivoted to thecarriage, the upper ends being pivoted-to curved arms PX, the lower ends o-t` which are pivotedto the lever-frame H, hinged at t, b'eneath the bottom ofthe ease A, and provided with a lever, H', whose handle extends to one side of said case, as shown'in iig. 1. These pawls are kept engaged with the racks 7L h, by means of springs t'z', and when the lever-frame is forced down, by depressing thelever-handle H', to cause the types in the line underneath the axis ofthe disks to pass into-the plastic substance L, the pawls O O will slip over the racks L z, andwl1en the lever-frame is released, and it springs upward, the pawls O O feed the carriage along, so that a second line of types may be pressed into the plastic substance.

The disks B are all brought back in to their original position as soon as the pins e, of their cords d, are released, by means of Weights Q, which are attached to the cords d, at the ends opposite the pins e, shown in fig. l. R R are holding-pawls, to prevent the casual movement of the carriage .`\I, when the pawls O are drawn back.

Thus it will be seen that the plastic substance may be converted into a mould for cast-ing stereotype-plans Without the trouble and expense of setting up type, and the cost of forming said moulds greatlyredueed. In order to prevent the casual movement of the disks B, employ a clamp, S, operated by a pin, j, and spring said clamp bearing or pressing against one of the outer disks B, or against a special blank friction-disk, previded for this purpose. The disks D are also provided, in addition to the types, with metallic spaces, ofgreater or less thickness, as ordinarily constructed, necessary for justifying the line, and giving a proper spaeing'to the Words. Figures and points are also used, as in ordinary printing. Yvhen a werd or sentence is to be composed, the disks are turned until the proper letters are brought into Aposition beside one another upon the top of the disks, as shown in g. 4. If the types are then notjustified, which can readily be observed through an opening or slot in the top of the box, or between wires or lines, shown in red, fig. 4, one or more of the proper disks is turned until a space or spaces of the required thickness is brought in position between the words to pl'operlyjustify the line. The disks are then clamped securely by means of the clamp S, before described. lVhen the line is formed, composing the word or words, the types are in a position to be read through the opening in the box; that is to say, the letters upon the types :rre not reversed, as in ordinary type-setting for printing, thus affording the fullest opportunity for inspecting the line, and making any required correction thereof before giving the impression.. When it is desired to release the pins e from the perforated plate K, for the purpose of allowing the weights Q to bring the disks into the proper position for forming a new word or sentence, the plate Kis swung down against the side of the box A, or other equivalent horizontal shelt` or ledge provided for that purpose, thus forcing all the pins from the perforations by one operation.

Having thus described my invention,'I claim as new, and desire to secure by Letters Patent- 1. A series of disks, B, provided with two sets of types, and arranged with cords d, pins e, and weights Q, to operate in connection with an index-plate K, substantially in the manner as and for the purpose set forth.

2. The method, herein shown and described, of justifying or spacing and correcting the types J, coinposing a word or sentence, and clamping the disks B, asset forth.

3. Releasing the pins e from the perforations in the plate K, by swinging down said plate, or by any equivalent means, as herein shown and described.

Thenabove specification of tny invention signed by me, this 7th day of September, 1867.

JOHN MAC NAIR.

Witnesses:

WM. F. McNAMAnA, ALEX. F. ROBERTS. 

